Ceramic article with enhanced structural and thermal stability and method of making same

A method for preparing an article from a cast ceramic workpiece, the method comprising:

• sintering the cast ceramic workpiece to form a sintered ceramic body, the sintered ceramic body comprising:
• a top portion with a first opening, the first opening having a first diameter;
• a base portion with a second opening, the second opening having a second diameter smaller than the first diameter;
• and
• a cylindrical portion extending between the top portion and the base portion, the cylindrical portion including a peripheral outer wall and a peripheral inner wall, and
• forming a plurality of through holes extending between the peripheral outer wall and the peripheral inner wall of the cylindrical portion, wherein the cylindrical portion comprises a material having a module of rupture (MOR) exceeding 100 Megapascals (MPa), a Mohs hardness exceeding 8, or a Young's Modulus exceeding 250 Gigapascals (GPa), or any combinations thereof.

A ceramic spinner comprising:

• a top portion with a first opening, the first opening having a first diameter;
• a base portion with a second opening, the second opening having a second diameter smaller than the first diameter;
• and
• a cylindrical portion extending between the top portion and the base portion, the cylindrical portion having a peripheral outer wall, a peripheral inner wall, and a plurality of through holes extending between the peripheral outer wall and the peripheral inner wall, wherein the cylindrical portion further includes a first region adjacent and surrounding each of the plurality of holes and a second region adjacent the first region, and wherein a material in the first region has a first characteristics, and a material in the second region has a second characteristics that is different than the first characteristics.